Reuse is_char_adaptation_v concept from char adaption header.

The char adaption header was included anyway, so we can also use the concept defined there.

include/seqan3/core/debug_stream/range.hpp

@@ -161,33 +161,19 @@ struct sequence_printer<sequence_t>
     }
 };
 
-/*!
- * \brief Checks if a type is a character type.
- *
- * Checks whether `type` is a character type. Evaluates to `true`, if `type` is the type `char`, `char8_t`, `char16_t`,
- * `char32_t`, or `wchar_t`, including cv-qualified variants. Otherwise, evaluates to `false`.
- *
- * \tparam type The type to check.
- * \ingroup core_debug_stream
- */
-template <typename type>
-static constexpr bool is_char_type_v =
-    std::same_as<type, char> || std::same_as<type, char8_t> || std::same_as<type, char16_t>
-    || std::same_as<type, char32_t> || std::same_as<type, wchar_t>;
-
 /*!
  * \brief A printer for character sequences.
  * \ingroup core_debug_stream
  *
  * This struct provides a printer for character sequences. It is used to print character sequences to a stream.
  * The character sequence must be an input range and the range reference type must be a character type, i.e.
- * seqan3::is_char_type_v evaluates to `true`.
+ * seqan3::detail::is_char_adaptation_v evaluates to `true`.
  *
  * \tparam char_sequence_t The type of the character sequence.
  */
 template <typename char_sequence_t>
     requires std::ranges::input_range<char_sequence_t>
-          && (is_char_type_v<std::remove_cvref_t<std::ranges::range_reference_t<char_sequence_t>>>)
+          && (detail::is_char_adaptation_v<std::remove_cvref_t<std::ranges::range_reference_t<char_sequence_t>>>)
 struct char_sequence_printer<char_sequence_t>
 {
     /*!